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An Empirical Study to Evaluate the Impact of the Designated Cancer Care Hospital System on the Equalization of Cancer Care

Research Project

Project/Area Number 19K19452
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 58030:Hygiene and public health-related: excluding laboratory approach
Research InstitutionNational Center for Global Health and Medicine (2021-2023)
Osaka International Cancer Institute (2019-2020)

Principal Investigator

Okawa Sumiyo  国立研究開発法人国立国際医療研究センター, 国際医療協力局, 上級研究員 (50747673)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsがん登録 / がん診療連携拠点病院 / 診療実績 / 手術 / ホスピタルボリューム / 生存率 / 医療の均てん化 / 医療の集約化 / 観血的治療 / 集約化 / がん / 医療の質
Outline of Research at the Start

「がん診療連携拠点病院(以下、拠点病院)制度」は、国民が居住地域に関わらず標準的な医療を受けられることを目的とし、二次医療圏のがん医療の均てん化に重点を置いている。大阪府内には64のがん診療拠点病院(厚生労働省指定17病院、大阪府指定47病院)が指定されている(2019年4月現在)。拠点病院間での診療機能の格差や二次医療圏間の格差は未だ解消していない可能性があるが、その実態把握は十分ではない。本研究は、がん医療に関する既存統計データを組み合わせ、がん医療の均てん化と格差の観点から拠点病院制度を評価する。

Outline of Final Research Achievements

This study revealed that the designated cancer care hospital (DCCH) system has contributed to the equalization of medical care in Japan.
The 3-year survival probability of cancer patients who underwent surgery at the national and Osaka prefecture DCCHs were 7.8% and 5.4% higher, respectively, than those at non-DCCHs. The disparity in the 3-year survival probability of surgically-treated patients among national and prefectural DCCHs decreased after the introduction of the DCCH system (2007-2009, 2010-2012) compared to before the introduction of the system (2004-2006). The DCCH system sets an annual surgical volume requirement, and our analysis of the association between the annual surgical volume and the 3-year survival probability of patients at the DCCHs showed the join point at 200-249 surgeries per year, based on which we considered this requirement appropriate.

Academic Significance and Societal Importance of the Research Achievements

がん診療連携拠点病院制度は、がん医療均てん化の推進を目指す政策として導入された。本研究は、大規模で精度の高い大阪府がん登録のデータを用いて分析し、拠点病院で手術を受けた患者の生存率が高いことや、拠点病院間での生存率の格差が縮小傾向にあることを明らかにし、この制度が医療の均てん化に貢献してきたことを示唆した。また、拠点病院の指定要件をエビデンスに基づいて設定することの重要性も示した。全国がん登録のデータを用いれば、全国や他の都道府県を対象とした同様の分析が可能である。本研究はがん診療連携拠点病院制度の今後の在り方の検討に資するエビデンスを創出することができた。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Minimum surgical volume to ensure 5‐year survival probability for six cancer sites in Japan2023

    • Author(s)
      Okawa S, Tabuchi T, Morishima T, Nakata K, Koyama S, Odani S, Miyashiro I
    • Journal Title

      Cancer Medicine

      Volume: 12 Issue: 2 Pages: 1293-1304

    • DOI

      10.1002/cam4.4999

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Surgical volume threshold to improve 3‐year survival in designated cancer care hospitals in 2004‐2012 in Japan2022

    • Author(s)
      Okawa Sumiyo、Tabuchi Takahiro、Nakata Kayo、Morishima Toshitaka、Koyama Shihoko、Odani Satomi、Miyashiro Isao
    • Journal Title

      Cancer Science

      Volume: 113 Issue: 3 Pages: 1047-1056

    • DOI

      10.1111/cas.15264

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-year survival from diagnosis in surgically treated patients in designated and nondesignated cancer care hospitals in Japan2021

    • Author(s)
      Sumiyo Okawa, Takahiro Tabuchi, Kayo Nakata, Toshitaka Morishima, Shihoko Koyama, Satomi Odani, Isao Miyashiro
    • Journal Title

      Cancer Science

      Volume: 未定 Issue: 6 Pages: 2513-2521

    • DOI

      10.1111/cas.14847

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hospital volume and postoperative 5‐year survival for five different cancer sites: A population‐based study in Japan2020

    • Author(s)
      Okawa Sumiyo、Tabuchi Takahiro、Morishima Toshitaka、Koyama Shihoko、Taniyama Yukari、Miyashiro Isao
    • Journal Title

      Cancer Science

      Volume: 111 Issue: 3 Pages: 985-993

    • DOI

      10.1111/cas.14309

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hospital surgical volume and 3-year mortality in severe prognosis cancers: A population-based study using cancer registry data2020

    • Author(s)
      Taniyama Yukari、Tabuchi Takahiro、Ohno Yuko、Morishima Toshitaka、Okawa Sumiyo、Koyama Shihoko、Miyashiro Isao
    • Journal Title

      Journal of Epidemiology

      Volume: - Issue: 1 Pages: 52-58

    • DOI

      10.2188/jea.je20190242

    • NAID

      130007965898

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] がん診療連携拠点病院指定要件の妥当性の検討:年間手術件数と生存率の関連性より2020

    • Author(s)
      大川純代、田淵貴大、中田佳世、森島敏隆、小山史穂子、宮代勲
    • Organizer
      第79回日本公衆衛生学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] Hospital volume and five-year survival after cancer surgery in 2007-2011 in Osaka, Japan2019

    • Author(s)
      Okawa S, Tabuchi T, Morishima T , Koyama S, Taniyama Y, Miyashiro I
    • Organizer
      12th European Public Health Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2025-01-30  

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